<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <script>
        document.write('<meta name="viewport" content="width=device-width, initial-scale='+(1/window.devicePixelRatio)+', maximum-scale='+(1/window.devicePixelRatio)+', user-scalable='+(1/window.devicePixelRatio)+'">');
     </script>
    <title>筛子</title>
    <style>
        #wrapper{
            width: 300px;
            height: 300px;
            display: flex;
            transform-style: preserve-3d;
        }
    </style>
</head>
<body>
    <div id='wrapper'>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
    </div>
</body>
</html>